Bowling pin



day 18 C.J.SHELDON BOWLING PIN Filed August 17 1925 PATENT CARSON J.SHELDON, OF YOUNGSTOWN, OHIO.

BOWLING PIN.

Application filed. August 17, 1825. Serial No. 50,763.

This invention relates to improvements in bowling alley pins, such atten pins, and duck pins and has for its principal ob ect to providemeans for protecting thelower end of the pin so as to render the pindurable.

One of the important objects of the present invention is to provide abowling pln wherein a protector means is associated with the lower edgeof the pin for the purpose of rendering the latter indestructible.

A further object is to provide a bowhng pin of the above mentionedcharacter which includes the depending shank formed on the bottom of thepin, an annular groove arranged in the bottom of the pin around theshank for receiving the upper portion of the inner ring which is fittedand shrunk onto the shank, and an upstanding rib formed on the inneredge of the protector ring which is vulcanized to the inner ring, thegroove and the cooperating portions of the ring and rib forming alocking means for the members arranged on the shank portion. j

A further object is to provide a bowling pin of the above mentionedcharacter which is simple in construction, inexpensive, strong anddurable and further well adapted to the purpose for which it isdesigned.

Other objects and advantages of the invention will become apparentduring the course of the following description taken in connection withthe accompanying draw- 1n the accompanying drawing fo-rmlng a part ofthis application and in which like numerals designate like partsthroughout the several views:

Figure 1 is a sectional view of the inner composite or metallic ring,and the rubber protector ring showing the manner in which the same arearranged on the shank portion of the pin.

Figure 2 is a fragmentary sectional view of the lower end of the bowlingpin, the composite or metallic inner ring and the rubber protector ringbeing removed therefrom and Figure 3 is a sectional view through thecomposite or metallic inner ring, and the rubber protector ring which isvulcanized to said inner ring.

In the drawing wherein for the purpose of illustration is shown thepreferred embodiment of my invention, the numeral 1 .base of the pin isundercut as illustrated at 2, and extending downwardly therefrom is,

the central shank portion 3. An annular groove 4 is formed in the undercut portion 2 and the same extends around the upper portion of thereduced shank 3 in the manner more clearly illustrated in Figure 2. Theshank 3 is circular and is of the same diameter throughout its entirelength.

Adapted to fit over the shank 3 isthe inner ring 5 which is formed ofany suitable composition or metal. The ring is secured on the shank byfirst applying an adhesive to the shank and then expanding the ring byheat and forcing the same on, the shank so that the upper portionthereof will be disposed within the innerportion of the annular groove4. The ring 5 is fitted and shrunk onto the shank 3 of the bowling pinso as to prevent accidental displacement therefrom, it being understoodof course that the ring 5 is of the same length as the shank.

Cooperating with the inner compartment or metallic ring 5 is the outerprotector ring 6 which is formed of rubber, the rubber protector ring isadapted to be vulcanized to the outer face of the inner composite ormetallic ring 5. The rubber protector ring is provided with thedownwardly beveled upper face 7. An upwardly extending annular rib 8 isformed on the inner portion of the beveled face 7 adjacent the inneredge of the rubber protector ring 7, and the purpose of this rib will bepresently described.

The beveled upper face 8 of the rubber protector ring is adapted tocoact with the under cut portion 2 of the pin 1. The upper edge of therib is substantially flush with the upper edge of the inner composite ormetallic ring 5, and this rib also extends into the annular groove 4: inthe manner as shown more clearly in Figure 1. When the upper portion ofthe composite or metallic ring 5 and the rib 8 of the protector ring 6are disposed within the groove 4, a lock will be pro-v vided forpreventing any side pull at the under cut 2 of the protector ring.

The bottom edge of the rubber protector ring 6 is disposed slightlybelow the bottom edge of the inner composite or metallic ring 5, and theinner lower portion of the outer ring 6 is beveled as indicated at 9.

The lower end of the bowling pin is provided with the usual countersunkopening 10, in the central portion thereof for cooper ation with theusual pin setter or spotter mechanism.

The use of a rubber protector ring of the character above described willeliminate the sharp corners on the lower end of a bowling pin as well asprevent the destruction of the pin or the chipping of the lower edgethereof when the same comes in contact with another pin, or strikes thewall of a bowling alley.

The simplicity in which my improved protector is constructed enables thesame to be readily and easily attached to a bowling pin, and will not inany way interfere with the operation of the pin spotting mechanism nowgenerally in use on bowling alleys.

lVhile I have shown the preferred embodiment of the invention it is tobe understood that minor changes in the size, shape and arrangement ofparts may be resorted to without departing from the spirit of theinvention and the scope of the appended claims.

Having thus described the invention, what I claim as new is 1. A bowlingpin having a central reduced shank portion formed on the lower endthereof, the bottom of the pin having an annular groove extending aroundthe shank portion, an inner ring fitted on the reduced shank portion,the upper portion of said inner ring extending into the annular groove,and an outer ring fitted on the inner ring, and an annular extending ribformed on the inner edge of the outer ring and extending upwardly intosaid annular groove.

2. A bowling pin having its lower extremity under cut, a central shankportion depending therefrom, said under cut portion being provided withan annular groove which extends around the shank portion, an inner ringfitted on the shank portion, the upper portion of said inner ringextending into the annular groove, a rubber protector ring vulcanizedonto said inner ring, the upper face of the rubber protector ring beingbeveled downwardly toward the center for engagement with the undercutportion of the pin, and an upstanding annular rib formed on the innerportion of the beveled face of the rubber protector ring, said ribextending upwardly into the annular groove.

3. A bowling pin having a central reduced shank portion formed on thelower end thereof, the bottom of the pin having an annular grooveextending around the shank portion, an inner ring fitted and shrunk ontothe reduced shank portion, the upper portion of said inner ringextending into the annular groove, a rubber protector ring vulcanizedonto the inner ring, and an annular rib extending upwardly from theinner edge of the rubber protector ring into said annular groove.

In testimony whereof I afiix my signature.

CARSON J. SHELDON.

